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2019 IEEE 17th World Symposium on Applied Machine Intelligence and Informatics (SAMI)最新文献

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Parking system with image processing 带图像处理的停车系统
Ing. Alžbeta Kanáliková, Ing. Emília Bubeníková
Image processing is a method to perform some operations on an image, to either enhance the image or to extract some useful information from it. It is a type of signal processing with an image as input and output in the form of an image or characteristics/features associated with that image. Nowadays, image processing, and digital image processing at that is among rapidly growing technologies. The article deals with image processing, specifically focuses on recognizing objects - cars in 2D image frames through IP cameras. The practical part deals with the implementation of algorithms from the Open CV library designed for vehicle recognition on a large parking lot in order to find the actual occupancy of the parking lot. The occupancy results of the parking rate converted to percentages are displayed on the web portal.
图像处理是对图像进行一些操作的一种方法,可以增强图像或从中提取一些有用的信息。它是一种以图像作为输入和以图像或与该图像相关的特征/特征的形式输出的信号处理。如今,图像处理和数字图像处理是快速发展的技术之一。本文涉及图像处理,特别关注通过IP摄像机识别二维图像帧中的物体-汽车。实践部分介绍了基于Open CV库的大型停车场车辆识别算法的实现,以查找停车场的实际占用情况。将车位率换算成百分比的占用结果显示在门户网站上。
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引用次数: 2
On Function Extrapolation by Fixed Point Iteration for Time-Delayed Systems 时滞系统的不动点迭代函数外推
Hemza Redjimi, J. Tar, J. Bitó
In practical applications the problem of numerical extrapolation of the value of a function over a discrete time-grid so that the previous values can be only “experimentally” observed, often arises. For instance, the extrapolation of the response of a dynamic system that is controlled on the basis of an available approximate dynamic model in adaptive control is a typical example. A quite wide class of controllers e.g. the Optimal Controllers realized by Nonlinear Programming over a discrete time-grid as Receding Horizon Controllers are good examples, too. In 2009 a novel adaptive controller design method was suggested that in the first step transforms the control problem into a fixed point iteration task then it so solves this problem that during one digital control step only one step of the iteration can be realized. This controller adaptively learns from the past. The method widely was investigated for various systems that were free from considerable time-delay, but only preliminary investigations were done how the delay in using the observed data and in exerting the calculated control signal concerns this method. In the present paper systematic investigations restricted to the approximation of known functions are presented in order to better reveal the approximation issues. On the basis of these investigations the usefulness of the suggested iterative method is concluded.
在实际应用中,经常会出现在离散时间网格上的函数值的数值外推问题,这样以前的值只能通过“实验”观察到。例如,自适应控制中基于可用的近似动态模型控制的动态系统响应的外推就是一个典型的例子。一类相当广泛的控制器,如在离散时间网格上通过非线性规划实现的最优控制器作为后退地平线控制器也是很好的例子。2009年提出了一种新的自适应控制器设计方法,在第一步将控制问题转化为定点迭代任务,从而解决了在一个数字控制步骤中只能实现一步迭代的问题。该控制器自适应地从过去学习。该方法已被广泛地研究用于各种不存在较大时滞的系统,但仅对使用观测数据和施加计算控制信号的延迟与该方法的关系进行了初步研究。为了更好地揭示逼近问题,本文对已知函数的逼近问题进行了系统的研究。在这些研究的基础上,总结了所建议的迭代方法的有效性。
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引用次数: 3
Stability of relative and absolute metrics: empirical evidence from pulmonology 相对和绝对指标的稳定性:来自肺脏学的经验证据
M. Szigeti, L. Kovács, T. Ferenci
It has been widely argued that absolute treatment effect measurements (such as risk difference) reveal the “clinical benefit” of an intervention. Yet, many previous experience with binary endpoints have shown that they are unlikely to be transportable between populations. As absolute metrics are usually derived from baseline risk and relative metric (such as odds ratio), it seems logical to rather measure relative metrics, assuming they are stable. In the present study, a continuous endpoint was used to assess the stability of both relative and absolute metrics using a empirical data from pulmonology. Results are preliminary due to the low baseline variability, yet, the difference was significantly correlated with the baseline, unlike the ratio, which is in line with previous experience with binary endpoints. Further research is needed to explore the stability with continuous endpoints.
人们普遍认为,绝对治疗效果测量(如风险差异)揭示了干预的“临床效益”。然而,以往许多关于二元端点的经验表明,它们不太可能在人群之间迁移。由于绝对度量标准通常来源于基线风险和相对度量标准(如比值比),所以假设相对度量标准是稳定的,那么度量相对度量标准似乎是合乎逻辑的。在本研究中,使用一个连续的终点来评估相对和绝对指标的稳定性,使用来自肺科的经验数据。由于基线变异性较低,结果是初步的,然而,差异与基线显著相关,不像比率,这与之前的二元终点经验是一致的。端点连续时的稳定性有待进一步研究。
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引用次数: 1
Smartphone Based HD Map Building for Autonomous Vehicles 基于智能手机的自动驾驶汽车高清地图构建
Lorant Szabo, László Lindenmaier, V. Tihanyi
The development of autonomous vehicles requires accurate map information, about the surrounding static landmarks such as lane information. Building up the so called HD Map requires robust sensors, that mainly means special hardware requirements. Thus research in this topic starts with question of availability of an HD Map. This paper describes a method of creating a robust HD Map on highways, including accurate lane information based on a simple smartphone. The sensor data of the phone are filtered by a Kalman-filter. Hence the localization is more accurate during the offline building process and the online recall of lane information as well. Thus based on this lane information, an accurate and robust trajectory can be planned for the autonomous vehicles.
自动驾驶汽车的发展需要精确的地图信息,关于周围的静态地标,如车道信息。建立所谓的高清地图需要强大的传感器,这主要意味着特殊的硬件要求。因此,本课题的研究从高清地图的可用性问题开始。本文描述了一种基于简单智能手机在高速公路上创建鲁棒高清地图的方法,包括精确的车道信息。手机的传感器数据通过卡尔曼滤波器进行滤波。因此,在离线构建过程和在线车道信息召回过程中,定位更加准确。因此,基于这些车道信息,可以为自动驾驶车辆规划准确而稳健的轨迹。
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引用次数: 5
Analysis of Real Airborne Collision Avoidance System Surveillance Parameters 真实机载防撞系统监控参数分析
J. Nosek, S. Pleninger, V. Socha
Airborne Collision Avoidance System (ACAS) has become an essential part of civil aircraft’s avionics. The surveillance function of this system provides each aircraft with the position information of other aircraft in vicinity. In order to acquire the position data, the system sends standardized messages on 1030 MHz radio frequency and receives replies on 1090 MHz. Since this frequency band is shared among all surveillance systems used in aviation, it is becoming saturated with the constantly rising air traffic volume. As a result of this saturation the air traffic controllers may not receive all messages transmitted by an aircraft which would lead to inaccurate indication on the radar screens. In order to determine how much ACAS contributes to the overall frequency saturation, it is necessary to observe its behaviour in real environment. This paper should analyze a few selected parameters, such as ACAS surveillance range, nominal surveillance rate or ADS-B version and find out their real values. For this purpose real messages received at 1090 MHz receivers were used and evaluated. The results showed the real value of ACAS surveillance range is much higher than the value stated in technical standards. Other results helped to define the nominal surveillance rate and show that the version of ADS-B which is mostly used in real environment is ADS-B ICAO version 0. These findings can be used as inputs to the tool for RF channels 1030/1090 MHz loading analysis.
机载防撞系统(ACAS)已成为民用飞机航空电子设备的重要组成部分。该系统的监视功能为每架飞机提供附近其他飞机的位置信息。为了获取位置数据,系统在1030mhz的射频上发送标准化报文,并在1090mhz的射频上接收应答。由于该频段是所有航空监视系统共用的,因此随着空中交通量的不断增加,该频段已趋于饱和。由于这种饱和,空中交通管制员可能无法接收到飞机发送的所有信息,这将导致雷达屏幕上的指示不准确。为了确定ACAS对总频率饱和度的贡献有多大,有必要观察其在实际环境中的行为。本文应对选定的几个参数,如ACAS监视范围、名义监视率或ADS-B版本进行分析,找出它们的真实值。为此目的,使用并评估了1090兆赫接收机接收到的真实电文。结果表明,ACAS监测距离的实际值远远高于技术标准中规定的值。其他结果有助于确定名义监测率,并表明在实际环境中主要使用的ADS-B版本是ADS-B ICAO版本0。这些发现可以用作射频信道1030/1090 MHz负载分析工具的输入。
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引用次数: 1
Design and Implementation of Semi-Autonomous Wall Climbing Robot Using Vacuum Suction Adhesion 半自主真空吸力攀壁机器人的设计与实现
Adnan Shujah, Hasan Habib, S. Shaikh, Abdur Rehman Ishfaq, H. Tahir, J. Iqbal
This paper presents the wirelessly operated semi-independent wall climbing robot, capable of climbing vertical surfaces and ceilings. To increase the working efficiency and to save human life, the robot was designed. For the movement of the robot, a method of a centrifugal pump for continuous suction is utilized. Detailed analysis and scientific calculations are performed for the mechanical design of the robot. The design of the robot is unique and having a high degree of modification makes it suitable for different applications. All mechanical design parts of the robot are manufactured after complete study, including basic structure, the vacuum duct, driving assembly, and the camera mounting pad. The wireless transceiver is employed to control the robot and to transmit wireless video signal captured by the camera. This robot overcomes the design limitations of certain other prototypes. The robot could be used for inspection, surveillance and could provide information in hostage situations. The robot is overall lightweight and smaller in size.
本文介绍了一种无线操作的半独立式爬墙机器人,能够爬上垂直表面和天花板。为了提高工作效率,拯救人类的生命,设计了该机器人。对于机器人的运动,采用离心泵连续吸入的方法。对机器人的机械设计进行了详细的分析和科学的计算。机器人的设计是独特的,具有高度的修改,使其适用于不同的应用。机器人的所有机械设计部件,包括基本结构、真空管道、驱动总成、摄像头安装垫等,都是在完成研究后制造出来的。无线收发器用于控制机器人和传输摄像机捕获的无线视频信号。这个机器人克服了某些其他原型的设计限制。该机器人可用于检查、监视,并可在人质情况下提供信息。该机器人整体重量轻,体积更小。
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引用次数: 5
An Evaluation of Wooden House Health Monitoring System using PVDF Piezoelectric Sensor with 3-layer Neural Network and Inverted Binary-Data Augmentation 基于三层神经网络和反向二值增强的PVDF压电传感器木屋健康监测系统评价
Noriaki Takahashi, Natsuhiko Sakiyama, Takuji Yamamoto, Sakuya Kishi, Y. Hashizume, T. Nakajima, Takahiro Yamamoto, Mikio Hasegawa, Takumi Ito, Takayuki Kawahara
We propose a wooden house health monitoring system using an AI chip and polyvinylidene fluoride (PVDF) piezoelectric sensors. In our experiments, we vibrated a test bed simulating a Japanese tea room, and obtained waveform data were binarized to be trained with a 3-layer neural network as a classifier. Using this 3-layer neural network, we determined that only one of the test bed’s four seismic shear walls was damaged. A comparison was made between cases where “inverted data for each bit of binarized waveform data” were added as data augmentation at the time of training and where they were not added. As a result, the accuracy rate improved by 10% at most when augmenting the data. In addition, the identification rate was a maximum of 70.3% for the data obtained by the piezoelectric sensor attached to the south side secondary member upper part located at the center of the test bed. We intend to further increase the identification rate and implement the classifier in a field-programmable gate array (FPGA).
我们提出了一种使用人工智能芯片和聚偏氟乙烯(PVDF)压电传感器的木屋健康监测系统。在我们的实验中,我们振动了一个模拟日本茶室的试验台,得到的波形数据进行二值化,用3层神经网络作为分类器进行训练。利用这种三层神经网络,我们确定了试验台的四个抗震剪力墙中只有一个被破坏。比较了在训练时添加“每位二值化波形数据的反向数据”作为数据增强的情况和不添加的情况。结果表明,在增加数据量的情况下,准确率最多提高10%。另外,安装在试验台中央的南侧副构件上部的压电传感器所获得的数据识别率最高可达70.3%。我们打算进一步提高识别率,并在现场可编程门阵列(FPGA)中实现分类器。
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引用次数: 2
Problems in archiving long-term continuous ECG data – a review 长期连续心电数据归档中的问题综述
Abdallah Benhamida, Akram Zouaoui, G. Szocska, K. Karóczkai, Ghaith Slimani, M. Kozlovszky
Measuring, recording and evaluating the various physiological patient parameters is one of our main challenge in healthcare sector recently. People are wearing different health monitoring sensors and there are already industry standards that can be used to store the measured individual data. Howe ver, many of these standards are incompatible with each other. Data processing and information mining of patient’s medical data requires generalized and well-defined data formats. Today’s monitoring tools - this paper focuses primarily on ECG equipments - are getting smaller and produce more and more data (often with higher resolution and more observed parameters). Remote monitoring of cardiovascular events and parameters are feasible, but digital archiving of ECG data at population level in Hungary is not fully solved yet. In our paper, we are focusing on remote monitoring of cardiac functions. We provide overview about the existing ECG data storage format standards and show their limitations.
测量、记录和评估患者的各种生理参数是我们最近在医疗保健领域面临的主要挑战之一。人们正在佩戴不同的健康监测传感器,并且已经有了可用于存储测量到的个人数据的行业标准。然而,这些标准中有许多是互不兼容的。患者医疗数据的数据处理和信息挖掘需要通用的、定义良好的数据格式。今天的监测工具(本文主要关注心电设备)越来越小,产生的数据越来越多(通常具有更高的分辨率和更多的观测参数)。心血管事件和参数的远程监测是可行的,但在匈牙利人口水平的心电数据的数字化存档尚未完全解决。在我们的论文中,我们专注于心脏功能的远程监测。我们概述了现有的心电数据存储格式标准,并指出了它们的局限性。
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引用次数: 7
Magnetic Field Image – Source of Information for Action Causality Description 磁场图像-行动因果关系描述的信息来源
M. Oravec, H. Pačaiová, G. Izaríková, M. Hovanec
Technical equipment (machines) create electromagnetic field (EMF) by its activity. Such field may be used for identification of problems by using of the principle of causality. Magnetic field image, presented by movement of a resulting vector of magnetic induction B, in a specific time interval and space, represents state of equipment, of a process. Magnetic field image contains the information that may be interpreted in time domain as well as frequency domain. The frequency domain may be interpreted by means of amplitude and phase spectrums. The time domain may be interpreted by means of statistic tools. Verification of the suggested process of experimental measurement was performed on water Kaplan turbine with a power of 0,4 MW. It was found out that the magnetic field image of turbine contains information about both mechanic as well as electrical elements of the system, about their behaviour (state), which may be used for identification of causes of possible problems.
技术设备(机器)通过其活动产生电磁场。这一领域可用于利用因果关系原理来识别问题。磁场图像是由磁感应强度B的结果矢量在特定的时间间隔和空间内的运动来表示的,它表示一个过程中设备的状态。磁场图像既包含时域解释信息,也包含频域解释信息。频域可以用幅度谱和相位谱来解释。时域可以用统计工具来解释。在功率为0.4 MW的水力卡普兰水轮机上验证了所提出的实验测量方法。研究发现,涡轮机的磁场图像包含了系统的机械和电气元件的信息,以及它们的行为(状态),这些信息可用于识别可能出现问题的原因。
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引用次数: 5
Reliable Presence and Intrusion Detection with Collaborative Sensor Modules in Electronic Property Protection Systems 电子产权保护系统中协同传感器模块的可靠存在和入侵检测
Bertalan Beszédes
This article deals with components (that effectuate the electronic protection) of property protection systems. Within this, mostly with to delineate the electronic outdoor protection, the intrusion detection system and some possible additional functions of the access control system. The solutions presented here are aimed to keep the cost low from the viewpoint of hardware requirements, together with to take advantage of the software opportunities.
本文讨论了产权保护系统的组件(实现电子保护的组件)。在这其中,大多以描述电子户外防护、入侵检测系统和一些可能的门禁系统附加功能为主。这里提出的解决方案旨在从硬件需求的角度保持低成本,同时利用软件的机会。
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引用次数: 10
期刊
2019 IEEE 17th World Symposium on Applied Machine Intelligence and Informatics (SAMI)
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